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(-) Description

Title :  DELTA-ENDOTOXIN
 
Authors :  J. Li
Date :  05 Sep 95  (Deposition) - 14 Oct 96  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Mosquitocidal, Membrane Pore, Cytolytic, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. Li, P. A. Koni, D. J. Ellar
Structure Of The Mosquitocidal Delta-Endotoxin Cytb From Bacillus Thuringiensis Sp. Kyushuensis And Implications For Membrane Pore Formation.
J. Mol. Biol. V. 257 129 1996
PubMed-ID: 8632451  |  Reference-DOI: 10.1006/JMBI.1996.0152
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - DELTA-ENDOTOXIN CYTB
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Gene: CYTB
    Expression System Plasmid: PCYTB
    Expression System Taxid: 562
    Gene: CYTB
    Organism Scientific: BACILLUS THURINGIENSIS SEROVAR KYUSHUENSIS
    Organism Taxid: 44161
    Strain: KYUSHUENSIS

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (2x): A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1CBY)

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1CPSUNKNOWNSER A:228C-TERMINAL PROTEOLYTIC PROCESSING STOP. SEE REMARK FOR THE NPS SITE ABOVE.
2NPSUNKNOWNSER A:38N-TERMINAL PROTEOLYTIC PROCESSING STOP. THE COORDINATES OF CYTB IS THAT OF THE INACTIVE PROTOXIN, WHICH EXISTS AS A DIMER IN THE CRYSTAL AND IN SOLUTION. THE N-TERMINAL ARMS OF TWO MONOMERS ARE INTERTWINED IN FORMING THE CENTRAL PAIR OF STRANDS IN A 12-STRANDED SHEET OF THE DIMER. PROTEOLYTIC PROCESSING CLEAVES THIS PAIR OF STRANDS TO RELEASE THE ACTIVE TOXIN AS A MONOMER, WHICH EXTENDS FROM THE NPS SITE TO THE CPS SITE WHEN PROTEINASE K IS USED FOR THE PROCESSING.

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1CBY)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1CBY)

 Sequence-Structure Mapping

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(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

(no "Exon" information available for 1CBY)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
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SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:227
 aligned with CT2AA_BACTY | Q04470 from UniProtKB/Swiss-Prot  Length:259

    Alignment length:227
                                    28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       
          CT2AA_BACTY    19 CSAPIIRKPFKHIVLTVPSSDLDNFNTVFYVQPQYINQALHLANAFQGAIDPLNLNFNFEKALQIANGIPNSAIVKTLNQSVIQQTVEISVMVEQLKKIIQEVLGLVINSTSFWNSVEATIKGTFTNLDTQIDEAWIFWHSLSAHNTSYYYNILFSIQNEDTGAVMAVLPLAFEVSVDVEKQKVLFFTIKDSARYEVKMKALTLVQALHSSNAPIVDIFNVNNYNLY 245
               SCOP domains d1cbya_ A: Mosquitocidal delta-endotoxin CytB                                                                                                                                                                                       SCOP domains
               CATH domains 1cbyA00 A:19-245 Delta-endotoxin Cytb                                                                                                                                                                                               CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........................eeeee..hhhhhhhhhhhhhhhhh.........hhhhhhhhhh...eeeeeeeeee.eeeeeehhhhhhhhhhhhhhhh......hhhhhhhhhhhhhh...hhhh.....eeee......eeeeeeeeeee.......eeeeeeeeeeeee...hhhhhh.....eeeeeeeeeeeeeeee.......hhhhhh....... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1cby A  19 CSAPIIRKPFKHIVLTVPSSDLDNFNTVFYVQPQYINQALHLANAFQGAIDPLNLNFNFEKALQIANGIPNSAIVKTLNQSVIQQTVEISVMVEQLKKIIQEVLGLVINSTSFWNSVEATIKGTFTNLDTQIDEAWIFWHSLSAHNTSYYYNILFSIQNEDTGAVMAVLPLAFEVSVDVEKQKVLFFTIKDSARYEVKMKALTLVQALHSSNAPIVDIFNVNNYNLY 245
                                    28        38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238
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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1CBY)

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A   (CT2AA_BACTY | Q04470)
biological process
    GO:0009405    pathogenesis    The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
    GO:0030435    sporulation resulting in formation of a cellular spore    The process in which a relatively unspecialized cell acquires the specialized features of a cellular spore, a cell form that can be used for dissemination, for survival of adverse conditions because of its heat and dessication resistance, and/or for reproduction.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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